need后面的宾语可以是名词、动名词、动词不定式或代词，这种情况下，need既可用于肯定句，也可用于否定句和疑问句，构成否定句和疑问句时要借助于助动词do或does.
1. need + n. /pron. 需要…
a.)The kids need some fruit. 孩子们需要些水果。
b.) We need a great deal of money now. 我们需要和多钱
2. need doing sth. …
= need to be done … 需要被… The young trees need watering at once. 小树需要立刻浇水。=The young trees need to be watered.
